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(andsi3+6): Replace bad clrbit pattern with two working ones.

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From-SVN: r7585
This commit is contained in:
Jim Wilson 1994-06-28 10:41:52 -07:00
parent 3bbbf89c84
commit 3c9b213099
1 changed files with 13 additions and 2 deletions
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15
gcc/config/i960/i960.md
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@ -1657,14 +1657,25 @@
return \"clrbit %2,%1,%0\";
}")
;; (not (ashift 1 reg)) canonicalizes to (rotate -2 reg)
(define_insn ""
[(set (match_operand:SI 0 "register_operand" "=d")
(and:SI (ashift:SI (const_int 1)
(and:SI (rotate:SI (const_int -2)
(match_operand:SI 1 "register_operand" "d"))
(match_operand:SI 2 "arith_operand" "dI")))]
(match_operand:SI 2 "register_operand" "d")))]
""
"clrbit %1,%2,%0")
;; The above pattern canonicalizes to this when both the input and output
;; are the same pseudo-register.
(define_insn ""
[(set (zero_extract:SI (match_operand:SI 0 "register_operand" "=d")
(const_int 1)
(match_operand:SI 1 "register_operand" "d"))
(const_int 0))]
""
"clrbit %1,%0,%0")
(define_insn ""
[(set (match_operand:SI 0 "register_operand" "=d")
(xor:SI (match_operand:SI 1 "arith_operand" "dI")